Feeler device for looms



Feb. 11, 1936.

2 Sheets-Sheet 2 Filed Aug. 20, 1932 Patented Feb. 11, 1936 UNITEDSTATES PATENT OFFICE Application August 20,

1932, Serial No. 629,668

In Switzerland June 21, 1932 3 Claims.

This invention refers to a new feeler device for automatically changingthe cop.

There are a great many kinds of apparatus constituting feelers forautomatically changing the cop, and up to the present the electricdevices have given the best results. However, when high speeds arereached these suffer from the defect implied in the want of adherencebetween the feeler mechanism and the cop of the loom, caused by thehorizontal movement and the consequent inertia produced by the abruptstoppage on the part of the shuttle due to the movement of the loom.

This inconvenience is completely eliminated by means of the device whichis the object of this patent.

In the drawings, which are an integral part of this specification, areshown:

Fig. 1 a side View of the mechanism Fig. 2 a plan of the mechanism andits corresponding derivations.

Referring to the drawings in more detail, these show I fibre stop, 2bearing, 3 springs, 4 loom guide, 5 bearing, 6 shuttle, I loom slay, 8cop, 9 picker, Ill metal cover on the cop, I I axis of the spring, l2fibre washer, I3 terminal, I 4 oscillating piece of the loom, l5 smalllever, Iii bobbin, I! revolving lever of the .automatic changemechanism, l8 axis of the mechanism which produces the automatic change,l9 union of the two terminals, 20 electric motor, 2| small contactlever, 22 transformer, 23 mass contact.

The device works as followsz-By means of the loom, when it is normallyworking, as indicated by the arrow in Fig. 1, the metal covers of thecops come into contact with the springs 3. springs in contact with theirpiece H, and each of them provided with terminals 13, are supplied withan electric current produced by the motor 20 which goes through thetransformer 22 and the contact lever 2| to the terminals I9.

It will be understood, therefore, that when the two springs 3 are incontact with the metal cover of the cop 10 an electric current isproduced which is communicated to the bobbin l6, and this in its turnmanipulates the small lever l5 coming in contact with the oscillatingpiece of the loom M which results in a movement in the direction of thearrow this movement being transformed into an oscillation of the smalllever I! which it These passes on to its shaft It. In this way themechanism for the automatic changing of the cop is able to function.

By the foregoing it will be seen that the automatic changing of the copis effected by means of 5 a perfect adherence of the feeler to the cop,thus avoiding completely the abrupt stoppage which takes place in otherfeelers due to their own inertia.

In this device there is produced at the precise 10 moment of contact theelectric circuit necessary to the bobbin so as to move the small leverand this latter in its turn effects the instantaneous change. In thisway, due to the small surface of a steel wire, however small may be theparts exposed the cop when empty leaves little residue of thread.

I claim:

. 1. A loom weft-feeler device, comprising in combination with the lay,the breast beam of the loom and the metal sleeve of the cop bobbin, asupport of insulating material carried by said. breast beam and adaptedto be moved back by the lay in its movement towards said breast beam,two spring wires spirally wound about and fixed at one end to saidsupport, an arm formed at the other end of each spring adapted to bepressed into contact with the metal sleeve of the cop bobbin by thespirally wound portion of the wires, and an electric circuit connectedto said arms and adapted to be closed by the contacting of said armsagainst said metal sleeve.

2. In a feeler device as specified in claim 1, a disc of insulatedmaterial mounted on the support between the spirally wound portions ofthe two spring wires.

3. In a feeler device as specified in claim 1, a cop changing mechanismadapted to be actuated by the closing of the electric circuit andcomprising a rocking shaft, a bracket mounted on said shaft, anelectro-magnet carried by said bracket, and connected up in saidcircuit, said magnet adapted to be excited by the closing of saidcircuit, a catch lever oscillatable on said shaft and adapted to beattracted by the excitation of said magnet, and a bell crank lever inthe path of movement of said catch lever and adapted to cooperate withsame to actuate the cop changing device.

JUAN PIcAfioL CAMPS.

